Starting work on my layout
some sort of parity with the old code version. mac, win & qwerty base layers, leds for selected base, teensy led for caps lock.

led usage could be better - 1 not doing much, 2 & 3 doing win/qwerty base. no flashing to share a led.

quite a few buttons do nothing in the standard layout currently.
Starting to add consumer key support & tweaks to layout, natch.
media keys working for play, << & >> plus vol +/- & mute - hopefully these flavours will work in windows unlike the previous macish vol buttons.
Only sending consumer key data if it has changed from the previous value - Fixes operation under windows where multiple presses were being registered